driver inclusion
category: feature
bugzilla: 21

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This module is mainly used to process I/O commands from the SCSI layer
and the exception mechanism.
1.read/write IO to chip.
2.Handling I/O Exceptions.
Signed-off-by: Ndenglei <denglei25@huawei.com>
Reviewed-by: Nchenguangli <chenguangli2@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>